Benjamin f



B. P. MILLER. Chimney Top.l

Patented Deo. 3,1867,

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plied with fresh air. By this means the eddies and. counter-currents are avoided. also provide water-dams,

.dd and the curved 'plate e, forming the back and top'ef the ventilator.

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BENJAMIN F. MILLER, NEW YORK, vN. Y,

v Letters Patent No. 71,630, dated December 3, 1867.

VENTILATING-GOWLS.

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TO ALL WHOM IT MAY CONOERN;

Bo-it known that I, BENJAMIN F. MILLER, of the city and State of New York, have invented and/made a. certain new and usefulImprovement in Ventilators; andI do hereby declare the following to be a full, clear, and exact description of the said invention, reference being had to the annexed drawing, making part of this specification, whereiny Figure 1 is a section of my ventilator complete.

Figure 2 isa vertical section of a. ventilator with the fro'nt water-escape left out, and

Figure Sis an elevation of the front of my ventilator, with perforated doors applied thereto.

Similar marks of'reference denote the same parts.

' Heretofore injecting-ventilators, for supplying` fresh air to vessels and buildings, have been made with' a wind-sail, from which a canvas pipe extends to the apartment Ito be ventilated. Other ventilators for the same object have been malle-of sheet metal, with a funnel-shaped mouth to receive the'air. On account of these being kept with the mouth to the wind, the rain and spray often beat in and greatly-inconvenience the occupants of the apartments ventilated; andthe currents of air being concentrated bythe funnel mouth, formeddies that prevent the rapid movement o f the air.

The nature of my said invention consists Ain a ventilator for injecting air, formed with nearly parallel sides, and n. mouth contracting in two directions, and opening into a curved passagmleading to the space to be supin suchfipositon that rain or spray will not pass down the ventilator.

In the drawing, a represents the base of the ventilator, which may be circular, action of the wind or otherwise, into the position required for the ventilator to reeeiv trunk rising from the base a, and curving into the nearly semicircula'r trunk o,

so'as to he turned by the e the wind. b is a square that is formed between the sides Between the sides oldthe inclined shedding-platefis introduced, to form the bottom of the mouth that by these plates, e andf, is contracted in two directions, and opens into the curved Vtrunk c. Any water that falls upon the platcf will run out again, unless the force `of the wind drive it upthe same. vTo provide against this contingency, I introduce the plato g, that leaves an opening at 2, for water to pass otf the upper end of the plate f, and run down above the plate g, and out at holes 3. Spray or rain dashing into the ventilator, and falling upon the curved plate e, is allowed to run out by the opening left at 4, and any moisture upon the side plates d d is prevented from running down those plates and into the apartment ventilated, by the ilange-plates 5, secured to the interior faces of pl tes d, and running from the upper edge of the platefdown to the ends of'the opening 4, to direct such moisture out through such opening. These ilanges only require to be small, narrow strips, and do nOtobstruet theair. Incase of snow, or when too much air `passes down the ventilator, the perforated doors tirmaybe closed. These doors are formed of'v sheet metal, hingedl at their outer edges to the plates d d, andrwhen-opcnthey may project forward of the edges of `these platesd d, and Hare outwards, so as to direct the current of air in entering the ventilator. -The curved air-passage e enables me tointroduce the platef, so as to cover the trunk b, for preventing water passing through the ventilator, and at the same time the air is not obstructed in its passage.

The plates e andfmay extend suiciently` forward to balance the weight, that the whole ventilator may turn freely on a vertical pivot.

v What I claim, and desire to secure by Letters Patent, is-

1. The curved air-passage c, extending from the trunk b to the mouth of the ventilator, as and for the purposes setforth.

2. The inclined platef and plateg, in combination with the opcnin water that may enter the ventilator, as set forth.

3. The opening 4, at the lower end of the curved plate e, for the purposes and as set forth.

4. The flange-plates 5, upon the plates cl, extending from the plate f, to direct moisture out through the opening 4, as specified.

^ 5. The perforated doors L 7i, in combination with ventilator, formed with the curved air ing mouth, as and for the purposes set forth.

Dated July 13, A. D. 1867.

gs 2 and 3, for receiving and discharging -passage c and dar- B. F. MILLER.

Witnesses:

Cms. SMITH, GEO. l). WALKna. 

